Reviving return_type_tinfo-system.

[ginac.git] / ginac / structure.h

diff --git a/ginac/structure.h b/ginac/structure.h
index 33d8ee4c000dc2054f01e4473d9ef4dd1a989934..be43c5852e38b0314fca49aaaac0d8afa14f2786 100644 (file)
--- a/ginac/structure.h
+++ b/ginac/structure.h
@@ -200,7 +200,7 @@ public:
 
        // noncommutativity
        unsigned return_type() const { return return_types::commutative; }
-       const basic* return_type_tinfo() const { return this; }
+       tinfo_t return_type_tinfo() const { return this; }
 
 protected:
        bool is_equal_same_type(const basic & other) const